diff --git a/tools/package_incus_test/container.go b/tools/package_incus_test/container.go
index 4d5d42b2e..b419d583d 100644
--- a/tools/package_incus_test/container.go
+++ b/tools/package_incus_test/container.go
@@ -292,7 +292,7 @@ func (c *Container) detectPackageManager() error {
 		return nil
 	}
 
-	err = c.client.Exec(c.Name, "dnf")
+	err = c.client.Exec(c.Name, "dnf", "--version")
 	if err == nil {
 		c.packageManager = "dnf"
 		return nil